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    • 72. 发明申请
    • METHOD AND SYSTEM FOR DETECTING THE POSITION OF AN EDGE OF A WEB
    • 用于检测网络边缘位置的方法和系统
    • WO2004072609A2
    • 2004-08-26
    • PCT/US2004003314
    • 2004-02-05
    • ACCUWEB INC
    • BUISKER RAYMOND AKALNAJS ANDREW
    • B65H23/02G01N21/88G01N21/89G01N
    • G01B11/028B65H23/0216B65H2553/412B65H2557/10G01N21/8806G01N21/8903
    • A method and system for determining the lateral position of an edge of a web are disclosed. The system includes an array of light transmitting elements and a corresponding array of lenses and an array of light receiving elements and a corresponding array of lenses. The light transmitting elements are each paired with a light receiving element and the light transmitting elements each transmit a beam of light energy towards the corresponding receiving element. The beams of light can be occluded by a web passing between the transmitting elements and the receiving elements, thereby reducing the light received by the receiving elements. The receiving elements can generate a signal that is proportional to the amount of they receive, and a controller can be used to determine the lateral position of an edge of the web in response to the signals generated by the receivers. A compensation light beam can be employed to enable the controller to compensate for several factors that can affect measurement accuracy.
    • 公开了一种用于确定幅材边缘的横向位置的方法和系统。 该系统包括一组透光元件和相应的透镜阵列和一组光接收元件和相应的透镜阵列。 光传输元件各自与光接收元件配对,并且光发射元件各自向相应的接收元件传输光束。 光束可以通过在发射元件和接收元件之间通过的幅材遮挡,从而减少由接收元件接收的光。 接收元件可以产生与其接收量成比例的信号,并且可以使用控制器来响应于由接收器产生的信号来确定幅材的边缘的横向位置。 可以采用补偿光束来使控制器能够补偿可能影响测量精度的几个因素。
    • 73. 发明申请
    • CORNEA CHARACTERISTICS MEASURING DEVICE
    • CORNEA特性测量装置
    • WO2004034894A1
    • 2004-04-29
    • PCT/US2003/032536
    • 2003-10-15
    • CAMPBELL SCIENCE GROUP, INC.SHAVER, Jesse, H.
    • SHAVER, Jesse, H.
    • A61B3/10
    • G02B21/0056A61B3/1005G01B11/028G02B21/0028G02B27/16
    • An apparatus (10, 50) for measuring characteristics of a substance (12) is provided. The 5 apparatus (10, 50) includes a light source (14, 52, 54, 56) to generate light to form an image. A splitter (16, 58, 60, 62) transmits the light from the light source to a first lens (18), which collimates the light. A second lens (20) receives the 10 collimated light and is adapted to oscillate with respect to the substance (12) and adapted to transmit and focus the light to a focal region within the substance (12), such that the oscillation will cause the focal region to pass back and forth through the 15 substance (12). A sensor (26, 64, 66, 68) receives light reflected from the focal region and provides a signal indicative of characteristics of the substance (12) at the focal region.
    • 提供一种用于测量物质(12)的特性的设备(10,50)。 5装置(10,50)包括用于产生光以形成图像的光源(14,52,54,56)。 分离器(16,58,60,62)将来自光源的光透射到准直光的第一透镜(18)。 第二透镜(20)接收10个准直光并且适于相对于物质(12)振荡并且适于将光透射并聚焦到物质(12)内的焦点区域,使得振荡将导致 焦点区域通过15物质(12)来回传递。 传感器(26,64,66,68)接收从焦点区域反射的光并提供指示物体(12)在聚焦区域处的特征的信号。
    • 76. 发明申请
    • METHOD AND APPARATUS FOR DETECTING AN OBJECT
    • 检测对象的方法和装置
    • WO1996023199A1
    • 1996-08-01
    • PCT/IE1996000002
    • 1996-01-25
    • INDUSTRIAL INNOVATION AND DEVELOPMENT LIMITEDMARKHAM, Charles
    • INDUSTRIAL INNOVATION AND DEVELOPMENT LIMITED
    • G01D05/34
    • G01B11/028G01D5/342
    • In a method of determining the location of at least one point on an object boundary a beam of light (12) is directed at a detector (14) which provides a signal (16) related to the intensity of the spot (13) falling on it. The object (22) is located between the light source (10) and the detector (14), and the light beam (12) is deflectable, under the control of a signal (18) from a controller (20), over an angle alpha so that at some point the light beam crosses the boundary (24) of the object so that the detected intensity of the spot (13) falls from a maximum to a minimum. The signal (16) is fed back to the controller which adjusts the control signal (18) in an attempt to deflect the spot to a position wherein the signal (16) equals a reference value corresponding to the light intensity detected by the detector (14) when the beam is partially obscured by the edge (24). In another embodiment the spot (13) falls on a translucent screen viewed by the detector. The beam may be reflected from the object instead of being transmitted past it.
    • 在确定物体边界上的至少一个点的位置的方法中,光束(12)被引导到检测器(14),所述检测器(14)提供与坠落的点(13)的强度有关的信号(16) 它。 物体(22)位于光源(10)和检测器(14)之间,并且在来自控制器(20)的信号(18)的控制下,光束(12)可偏转,角度 α,使得在某些点处,光束穿过物体的边界(24),使得斑点(13)的检测强度从最大值降到最低。 信号(16)被反馈到调节控制信号(18)的控制器,以试图将光点偏转到其中信号(16)等于与由检测器(14)检测到的光强度相对应的参考值的位置 )当光束被边缘(24)部分地遮蔽时。 在另一个实施例中,光斑(13)落在由检测器观察的半透明屏幕上。 光束可以从物体反射而不是透过它。
    • 78. 发明申请
    • NON-CONTACT HIGH RESOLUTION DISPLACEMENT MEASUREMENT TECHNIQUE
    • 非接触式高分辨率位移测量技术
    • WO1988008512A1
    • 1988-11-03
    • PCT/US1988001181
    • 1988-04-11
    • MCT SYNERCEPTION, INC.
    • MCT SYNERCEPTION, INC.SABERSKY, Andrew, P.LITTLESTONE, NicholasABBOTT, Jack, E.GIBBONS, William, J.D'ORAZIO, Robert, R., J.SMITH, Nathan, R.
    • G01B11/14
    • H01L21/67259G01B11/028H05K13/08
    • An apparatus for optically detecting the position of an edge (114) of a workpiece in a sensing plane (110), involving the emission of electromagnetic energy from a known source region (100) in the sensing plane (110) such as to cause the edge (114) to create a shadow having a penumbra in the sensing plane (110). Two detectors (106, 108) are provided for determining the amount of energy which reaches two known detection regions in the sensing plane (110) and wholly within the penumbra. A mathematical derivation shows that the amount of energy detected by one detector (106) determines a first curve in the sensing plane (110) on which the edge must lie, and the amount of energy detected by the other detector (108) determines a second curve in the sensing plane (110) on which the edge (114) must lie. The intersection of these two curves fully determine the position of the edge (114) in the sensing plane (110).
    • 一种用于光学地检测感测平面(110)中的工件的边缘(114)的位置的装置,其涉及从感测平面(110)中的已知源区域(100)发射电磁能,以使得 边缘(114)以产生在感测平面(110)中具有半影的阴影。 提供两个检测器(106,108),用于确定在感测平面(110)中并且完全在半影中达到两个已知检测区域的能量的量。 数学推导表明,由一个检测器(106)检测的能量量确定在其上必须位于其上的感测平面(110)中的第一曲线,并且由另一检测器(108)检测的能量量确定第二 边缘(114)必须在其上的传感平面(110)中的曲线。 这两条曲线的交点完全确定边缘(114)在感测平面(110)中的位置。